Small Asymptomatic Unruptured Intracranial Aneurysm in Patients Over 65 with Associated Medical Comorbidities
Clinical Scenario
This protocol addresses patients older than 65 years who have a small, asymptomatic unruptured intracranial aneurysm (UIA) with low hemorrhage risk based on location, size, morphology, and family history, in the presence of associated medical comorbidities.
Advancing age and concurrent medical comorbidities are central factors that shape the risk–benefit assessment of intervention versus continued observation in this population.
Treatment Approach
When repair is warranted, the protocol covers definitive aneurysm obliteration via surgical or endovascular intervention. Patient selection, the specific approach, and the full decision pathway are available in the complete protocol.
DOI: 10.1161/STR.0000000000000070
The treatment risk of patients with UIAs is related to advancing age, medical comorbidities, and aneurysm location and size, so in older patients (>65 years of age) and those with associated medical comorbidities with small asymptomatic UIAs and low hemorrhage risk by location, size, morphology, family history, and other relevant factors, observation is a reasonable alternative (Class IIa; Level of Evidence B).
Patients with aneurysms with documented enlargement during follow-up should be offered treatment in the absence of prohibitive comorbidities (Class I; Level of Evidence B).
Surgical clipping is an effective treatment for UIAs that are considered for treatment (Class I; Level of Evidence B).
Endovascular coiling is an effective treatment for select UIAs that are considered for treatment (Class IIa; Level of Evidence B).
Imaging after surgical intervention, to document aneurysm obliteration, is recommended given the differential risk of growth and hemorrhage for completely versus incompletely obliterated aneurysms (Class I; Level of Evidence B).
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